I'm just getting started using RedGate source control. My question is this. Is there a way to automate (for example nightly) the commit process.

Our goal here is that we have a lot of programmers working on the dev box and we would like a history of their changes and a quick way to use those scripts to build another database remotely (offline) at any given time.

Normally the actions carried out by SQL Source control would be performed manually by each developer when they're happy with the work they have completed and are ready to commit the changes to the source control repository. It's probably not a great idea to have check-ins performed automatically, as a developer might have left the database in an inconsistent state.

If you want to automate the deployment of these checked-in changes to other environments, such as a staging or test environment, the best thing to use would be SQL Compare. You can automate the process using the command line interface.